At the moment, there are one airlines flying to Ulaanbaatar. Go through the results to find the right flights for you – you can adjust the filters to see find even more flights to Ulaanbaatar.
The most popular airlines offering flights to Ulaanbaatar are Emirates. Emirates is the most popular one, but that doesn’t mean their flights will be the cheapest. If you can't find a flight time that suits you, why not look at flying out from a different airport?
The distance between London Stansted to Ulaanbaatar is 6929 km. Normally, it takes about 42 hrs 15 mins to fly, and you can definitely expect the journey to be at least 42 hrs 15 mins. You can see the various flight times in the results.
Searching by month, for instance, will show you the best time of the week to fly.